Results 21 to 30 of about 66,629 (316)
Photoswitchable Anapole Metasurfaces
Advanced Optical Materials, 2021 AbstractNonradiating charge‐current configurations have attracted attention in photonics for the efficient localization of the electromagnetic field. Anapole mode is a unique nonradiating state of light induced by the interference of electric and toroidal dipole that possesses rich physics with potential applications in micro‐nanophotonics.
Wenhao Wang +4 more
openaire +2 more sources
Multifunctional Nonlocal Metasurfaces [PDF]
Physical Review Letters, 2020 15 pages, 4 ...
Adam C. Overvig +2 more
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Design and implementation of a near-field focused metasurface for microwave power transmission
Results in Physics, 2023 In this paper, a near-field focused (NFF) metasurface composed of sub-wavelength structures for microwave power transmission is designed and implemented.
Han Xiong +5 more
doaj +1 more source
Horn-like space-coiling metamaterials toward simultaneous phase and amplitude modulation [PDF]
, 2018 Acoustic metasurfaces represent a family of planar wavefront-shaping devices garnering increasing attention due to their capacity for novel acoustic wave manipulation.
Anderson, Stephan +4 more
core +2 more sources
Review of terahertz gradient metasurface
Dianzi Jishu Yingyong, 2019 Metasurface, a novel artificial electromagnetic material, its thickness is much smaller than the wavelength. By regulating the interaction between the sub-wavelength unit structure and the electromagnetic wave, the wave will undergo a phase or amplitude ...
Kou Wei +3 more
doaj +1 more source
Active nonlocal metasurfaces [PDF]
Nanophotonics, 2020 AbstractActively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication. Most wavefront-shaping metasurfaces can be considered “local” in that their operation depends on the responses of individual meta-units.
Malek Stephanie C. +3 more
openaire +4 more sources
Frequency coding metasurface for multiple directions manipulation of terahertz energy radiation
AIP Advances, 2019 A multifunctional frequency coding metasurface is proposed in terahertz frequency band. Different from the previous coding metasurface with a fixed phase difference of the neighbor coding unit cells in the whole working frequency band, the proposed ...
Shao-He Li, Jiu-Sheng Li
doaj +1 more source
Frequency-Diverse Metasurface Antenna With Hybrid Bunching Methods for Coincidence Imaging
IEEE Access, 2020 A frequency-diverse metasurface antenna with hybrid bunching methods for coincidence imaging is proposed in this paper. The hybrid frequency-diverse bunching metasurface antenna contains an excitation system, a frequency-diverse metasurface and a double ...
Mengran Zhao +5 more
doaj +1 more source
Controllable Manipulation of Wi-Fi Signals Using Tunable Metasurface
Leida xuebao, 2021 In this paper, we propose the utilization of a programmable metasurface for flexibly manipulating ambient Wi-Fi signals. First, we propose a new and efficient optimization algorithm CWGS (Complex Weighted Gerchberg-Saxton), which is based on an ...
Ya SHUANG +4 more
doaj +1 more source
Programmable Acoustic Metasurfaces [PDF]
Advanced Functional Materials, 2019 AbstractMetasurfaces open up unprecedented potential for wave engineering using subwavelength sheets. However, a severe limitation of current acoustic metasurfaces is their poor reconfigurability to achieve distinct functions on demand. Here a programmable acoustic metasurface that contains an array of tunable subwavelength unit cells to break the ...
Zhenhua Tian +7 more
openaire +3 more sources